Street-sweeping machine.



B. F. GREGORY. STREET SWEEPING MACHINE.

APPLIGATION FILED 11110.22, 1910.

Patented Aug.r 15, 1911.

s SHEETS-sum1.

B.P.GREG0RY. STREET SWEEPING MACHINE.

yPatented Ang. 15, 191'1.

`APPLIGATIOR' FILED DEU. 22, 1910.

3 SHEETS-SHEET 2 @Hrm/Mya B. I. GREGORY. STREET SWEBPING MACHINE. APPLIOATN FILED DE0.V22, 1910.

Patented Aug. 15, 1911.

` 3 BHBETB-BHEBT 3.

' extreme upper end of said traine 50.

l escapes at all.

or shaft 44, and these Wheels are placed quite close together as compared to the distance between the rear wheels 1. rIl'he said axle 44 'also' vcarries the partially7 lclosed framework 50 into the upper end of Which tits the ,chute 40, 'Which latter is pro vided with the bearing surface 51, resting upon the The strilcture is such thatv it closely resembles in action the fifth wheel of a vehicle, as will be readily understood. The said Shaft 44 is also rigid with the sprocket 42, and likewise carries a companion sprocket as best shown in Fig. 4. The conveyor chain 41 which receives the dirt through the chute 4t) ext-ends from the sprocket 4Q to the sprocket 53, and consequently receives its motion fr-un both of. said sprockets.

Thcd'rt after being elevated bv the buckets 5? of the eonwver 41 is finally ydumped through the chute 5G into a vagon i?. as will be readily understood.

rl'lie :swing extends entirel)7 over and incloses the brushes 15 and 21, as Well as the conveyor 9G, so that practically no dust In thesame way, the conveyer 41. is incloed in a casing 58, which practicall)1 prevents-'the escape of dust. therefrom, and if desired, the Wagon 5i' may be provided with a` cover which will prevent the esca-pe of dust a'lter the material is delivered in said Wagon. All the parts wherever desirable, are also provided with ball bearing-s Such as (i0, and the conveyor easing,

5S bracetl'as` by means of the chain G1. The frame-Werk 50 is also braced from said easing S, as by the -rodl (3:2. rlhe conveyer casino; 5S lis likewise uuiuuted at .itsflouerend on the said shaft "14 as best illustrated in Figs. Q, 3 and 4, and in most cases it iprcferrcd to employ balk bearings, as illustrated.

As illustrated ciiagrammatically in Fig. 5, since the front wheels 4T and 4S are mu'fh closer together than are the rear wheels, very sharp curves may be turned, and in order to ptruiit this action, l provide clutch couplings (13 and tt lon the said shaft 44, which couplings will enable one wheel 4S to-travel fester than the ,other wheel 47, for exai'uple. and in a manner well known. To

facilitate this aetion, the hubs of the said wheels are provided with the springs G? vin order that the members of the said clutch coupling-.Ls may spread apart and be forced back into.engagea-lent. In order to further steady the parts, ahrace may be provided between the swiveledframe 50 and the ivagfon 57, as shown.

The 'operation *of m v improved sweeper will be clear from the toregroin'gjylnd mar be briclly summarized as' follo\v.:--'l`he l'u'ussli 15 bein;r suitably adjusted vby the levers 10, the machiiie propelled by an)7 ltween said second and third conveyers,

through the gear 3, turn the pinion 4, which rotates the sprocket 1Q through the chain 13, and t-l'icrelnr turns the axle 11 of the said brush. i\"laterial is carried b y said brush against the transverse plate Q5, and is sivept 70 therefrom on to the conveyer, which delivers the said material to the oppositely disposed screw conveyors 3S and 32), which conveyors deliver the material through the chute 4() into the buclelts 55 ot the con- 75 veyer 41, and these said buckets finally deliver the material into the wagon 57. In turning sharp corners', as illustrated in Fig. 5, the swiveled connectionl enables the parts `to readily adjust themselves, indica ted, ovving to the coml'rarativelyr very short distance betujeen the front Wheels 47 and All of the parte are inclosed, as shown, so that the escape of dust is prevented. The conveyors 26,33 and-41 receive their power 85 'from the chain 352, driven by the gearll, as will be readily understood.

vlt is obvious that' those skilled in the art may variY the details of construction and arrangzeinentA of parts Without departing from the spirit of my invention, and theretore l do not Wish to be limited to such features except as may be required by the claims.

1. In a. streetsweeping machine provided with Vfrom and hack Wheels, the con'ibination of a brush; ay conveyer adapted to receive material from Saidbrush; a second conveyor adapted to receive Said material from said First. conveyor; a third conveyer adapted to receive said material from said second conveyer; and a su'iveled connection mounted` on the said front Wheels of said inachine be` sub- 105 st antial'l}Y as described.

In street sweepingvmachine 'provided with front and back Wheels, the combination of a brush, mounted under the axle of the `back wheels; means attached to said Wheels for driving' said brush; a conti-ver adaptedto receive. material from said brush: a second convever adapted to receive saidmate-y vovorz a second conveyor located over said wheels adapted to receive material from said first eonveyer; means provided with a chute associated with said second conveys-r:

suitable power, when the rear Wheels 1 Will i aV trame carried by'fsaid Wheels and sivilveled 7"" to 'saidmeans; a casing mounted in said frame and on saidzwheels; and a third con veyer adapted to receive material from said chute mounted in said casing, substantially as described.

4, In a street sweeping machine, provided with rear Wheels and front wheels located closer together than said rear Wheels; oppo-l sitely disposed screw conveyers located over said front wheels; a conveyor adapted to deliver material to said screw conveyers; means provided with a chute located below said screw conveyers; 4a partially closed frame mounted on said 'front wheels and swiveled to said means; and. a conveyer having one end also mounted on said frontwheels adapted: to receive material from said chute, substantially as described.

5. In a street sweeping machine provided with rear wheels and front wheels located closer together than said rear wheels; a

brush located below the axle of said rear wheels; a plate adapted to receive material taken up by said brush; a conveyex.' adapted to receive material swept from said plate by t said brush; oppositely disposed screw con veyers located over said front wheels, adapted toreceive material from said first nien tioned conveyer; means provided with a chute located below said screw conveyers; a partially closed frame mounted on said front wheels and swiveled to said means; and a conveyed having one e'nd also mounted on said front' wheels adapted te receive mate rial lfrom said chute, substantially as de scribed. In testimony whereof, 1 affix my signa ture, presence of two witnesses.

BENJAMIN F. GREGORY. Witnesses:

M. E. Gaona' ALLEN A. ORR. 

